my 1978 ford f150 will crank over good but will not fire a shot. Help

Asked by Dec 16, 2017 at 05:43 PM about the 1978 Ford F-150

Question type: Maintenance & Repair

The spark is strong from the coil and out of the plug wires. I also put some
fresh gas into the carb . I checked compression  and they all read around 60
pounds which is a little low but it has not been run for  6 years. If you have any
idea please help.

3 Answers


try a good penetrating fluid down the plug holes and let it sit (maybe a week spraying every day),compression is way low seems like rings sucked themselves to the pistons make sue you change the oil and filter before starting.


At 60 # of compression in all cylinders penetrating oil not going to help you didn't say what the mileage was If the cylinders were rusty , you can have filling the ring gap with debri You may as well figure on at least having the motor re-ringed but that can turn into a complete engine overhaul stuck rings can also cause broken ring lands

Hi: Wondering how you made out because I have the same problem with my 1978 F150 Ranger , 302. Is it a regular 302 or a H.O. 302 in these trucks? I know that the firing orders are different.

Your Answer:


Looking for a Used F-150 in your area?

CarGurus has 188,281 nationwide F-150 listings starting at $1,300.


Ford F-150 Experts

  • #1
  • #2
  • #3
View All

Related Models For Sale

Used Ford Mustang
317 Great Deals out of 38,105 listings starting at $1,312
Used Ford F-250
395 listings starting at $3,495

Used Cars For Sale

2018 Ford F-150 For Sale
120 Great Deals out of 115,224 listings starting at $17,644
2017 Ford F-150 For Sale
132 Great Deals out of 8,000 listings starting at $16,001
2016 Ford F-150 For Sale
221 Great Deals out of 9,571 listings starting at $14,500
2015 Ford F-150 For Sale
288 Great Deals out of 11,435 listings starting at $9,950
2014 Ford F-150 For Sale
348 Great Deals out of 10,069 listings starting at $7,995

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.